Despite this crude approximation, relevant results have been obtained which bear general interest [1]}, [2]}, [3]}. At the same time many examples of systems exist for which the above assumption holds true just as a first order approximation [4]}, [5]}. To overcome this intrinsic limitation, the effect of aggregated structures of nodes, such
as cliques, modules or communities [1]}, [7]} has been recently addressed in the literature. This implies analysing the cooperative interference within bunches of tightly connected nodes and assessing their role in shaping the ensuing dynamics, in the framerwok of a generalized picture which accounts for multiple pairwise exchanges.
